31 Solid Edge V20 2D Drawing

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Solid Edge V20 2D Drawing

2D SketchesChapter 2

EntityObjects

Lines ArcsCircles

andEllipses

Rectangles

EditingSketches

Filletsand

Chamfers

Trimmingand

Extending

IntelliSketchSettings

GeometricRelations

SelectingEntities &Deleteing

ConstructionLines

ReferencePlanes

SelectingProfileView

Using2D Sketches

CreatePart

CreateAssembly

Grid SettingsRe-Setting

Origin

ConstrainingSketches

SmartDimensions

StandardDimensions

TutorialAccurateLayout

CreatingDrawings

Adding Textand

DimensionsPrinting

2DProfiles

2DSketches

Key-InValues

GeometricConstraints

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Solid Edge V202D Drawing

2D Drawings may take two forms:

2D Sketches show the outlines and locations of mul-tiple shapes or parts to be designed.

2D Profi les must be closed shapes with no entities inside or crossing the sketch. The sketch at the right may be used to create a part by selecting specifi c shapes then “cleaning up” the outline by trimming inner curves. The fi nal shape must be a single series of connected lines and arcs.

Complete Master Sketch. (Cannot be used to create a part in this form).

Profi le must be a closed “loop” with no internal lines.

Resulting 3D object with depth added.

Portions of the Master Sketch are copied when creating individual part features.

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Assembly Sketches (Layouts)

These are used to defi ne the critical geometry in a series of mating parts. Elements from the master sketch may be selected to create the individual parts. This assures that the parts are the correct size and are located in exactly the right place.

Elements of the part sketches which are derived from the master sketch may be associated (linked) back to the mas-ter sketch. This means that any change in the master sketch will update all the associated parts.

Portions of the sketch were used to create the base of the pillow block as-sembly.Other portions of the same sketch will be used to create the opening for the bearing.Modeling the bearing is done by selecting the inner circles. The bronze bearing is created as a separate part.

The fi nal assembly is shown with the parts modeled exactly as they fi t.

As you can see, 2D sketches are the basis for much of the design and part creation process. These sketches can be very general at fi rst then, exact sizes can be assigned later. All parts associated to the master sketches will re-size to the new dimensions. Each part will be the right size and in the right place.

Exploded Assembly view.

BronzeBearing

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Starting a 2D Drawing

Any new object starts with a 2D sketch. Complex objects can be designed more effi ciently by creating a master sketch with part geometry defi ned by a series of overlapping lines. As the part shape evolves the 2D lines are used to add material or cut away material.

Simpler shapes may be designed by staring directly with the Protrusion or revolved Protrusion icons. Master sketches give more control over the modeling process.

Component Sketches are placeholders for existing parts or for related items yet to be designed.

Once Sketch is started, The Ribbon Bar displays prompts and options.A Reference Plane must be selected. Or, a new reference plane must be defi ned as a 2D drawing plane.

A pop down dialog box allow the selection of alternate planes for starting the sketch.

Coincident Option starts a sketch on one of the existing reference planes.

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A 2D drawing screen appears.

• The Draw toolbar replaces the Main toolbar.

• The drawing surface is now the Front (X-Z) plane.

• The horizontal line is the edge view of the Top (X-Y) plane.

• The vertical line is the edge of the Side (Y-Z) plane.

Draw menu items may hve several op-tions selected from pop down menus.

The fi rst tutorial (chapter 1) intro-duced the 2D draw-ing process.

2D drawing surface = Front (X-Z) plane

Edge of Top (X-Y) planeEdge

of S

ide

(Y-Z

) pla

ne

Exercise:

√ Start Solid Edge.√ Click Sketch.√ Click the Front reference plane.

Draw some shapes.Explore the pop downs

Press ESC key to stop a command.

When fi nished, click the RETURN button.

Exit Do not save the drawing.

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Draw Menu

Edit Menu

Constraints Menu

Drawn items may be changed by editing lengths, angles, diameter/radius, etc.

When items are connected, changing one item may cause another entity to change in an unexpected or unwanted man-ner.

Placing constraints on a 2D sketch helps to ensureEngineering Intent.

Constraining sketches is an important step in the design process. Many features may be changed as the design evolves. Making sure the master sketch changes in a predictable manner is critical.

Constraints are a combination of geometric (parallel, vertical, concentric, tangent, etc.) and dimensional lengths.The fi rst tutorial (chapter 1) introduced some of these ideas.

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Line command. Starting a line displays the Line Ribbon Bar.

Color Type Thickness

Toggle between line and arc

Active LineStyle

Intent Zone

Alignment IndicatorMany indicators will appear as a drawing is created. These help to insure good geometry.

A straight line was drawn then the arc toggle was selected. The intent zone creates the arc based on how the mouse moves out of the intent zone.

Alignment indicators fl ash when horizon-tal.vertical, extensions or other alignments are sensed.

Indicators may be turned On/Off by clickingTools menu and clicking the selection but-tons.

Tools ... Intellisketch ... Relationshipstoggles various geomentric indicators on/off.

Alignment IndicatorsOn/Off toggles.

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Other options for Line are Point (used as a marker or place holder) and Freesketch.

Freesketch. Hold left moude button down and draw shape. Solid Edge will create straight lines and arcs.

√ Place smart dimensions to con-strain the shape.

Point

Circle. Pop down provides options for drawing circles and ellipses.

The circle ribbon bar provides options for color, linetype and line thickness. Click either diameter or radius box to input size.

Tangent Circle

A circle was placed at ran-dom tangent to two lines.

The circle size may be set using the circle command or by placing a smart dimension.

Distance Betweendimension option was used to fi x point location.

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Arc.

Three options are shown.The arc ribbon bar gives slightly different options for each arc type.

Curve.

Click a series of points. A smooth curve is drawn.

Curve has many set-tings and options. Check Help for more information.

Rectangle.

Quick method:

Select Rectangle.Hold down left mouse button and sketch diagonal line.

Use smart dimensions to set size.

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Constraining Sketches.

Constraints help to insure that changes to a sketch behave in a predictable manner. Editing causes shapes to change and parts often must be re-sized for weight, strength, appearance or other reasons. All of the changes can result in some weird shapes unless constraints are in place to control the changes. Two types of constraints are used: Dimension Constraints and Geometric Constraints.

Dimension Constraints

Smart Dimensions are applied to individual elements. A single pick will dimension a line, circle, etc.

A pop down menu for other dimension types is shown. Distance between and angle between relate two items.

Driving dimensions control a part feature. Driven dimensions are controlled by other dimen-sions. Each type is a different color on the screen.

Geometric Constraints

Turns display of geometric icons Off/On

The geometric con-straint icons are shown. Choosing and applying constraints is a matter of planning which elements must remain fi xed in relation to other ele-ments that are allowed to change.

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Aligning Geometry

The rectange is centered on the reference planes us-ing connect constraint.

(The fi rst tutorial in chap-ter 1 used horizontal and vertical to do the same thing).

Connect the mid-point of the horizontal line to the vertical (Y-Z) plane.Connect the mid point of the vertical line to the horizontal (X-Y) plane.

Changing the 2.000 and 3.000 dimensions will keep the rectangle centered.

A hexagon has been circumscribed about a circle. We want to be able to change the circle size and keep the hexagon shape.

Lines are connect constrained andtangent constrained.

Changing the circle size produces in an unexpected result!

What other constraints need to be added to fi x the problem?

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Editing 2D sketches.2D drawings are often constructed using basic shapes then editing the shapes to get the fi nal forms.

Fillet is a rounded corner. Chamfer is a beveled corner.

Offset may be one side or both sides.

Sizes and locations may be fi xed by placing dimensions.

Objects may be moved or re-sized by changing the dimension value.

Move pop-down displays several related edit-ing commands.

The rectangle shape was modifi ed using the fi llet editing command.

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Trim

Inner circular arcs were removed using trim.

Extend would not work but Trim would work.

Extend will only work if there is a “stopper”boundry.

Construction Lines

Regular lines may be toggled to con-struction line status (and back). Construction lines are not considered as part of a profi le sketch.

Using construction lines is a good way to anchor geometry and locate circle centers, etc.

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Grid and Grid Snap

Placing a grid on the screen enables additional drawing accuracy controls. By setting a useful grid spacing and toggling Snap To Grid, the start and end points of lines, centers of circles, etc. can be placed accurately.

Grid is very useful when an item must be placed relative to an existing point. Re-set the grid zero then mea-sure over to the new point.

Toggle Grid On/Off with the screen icon or useTools ...Grid

Grid Ribbon Baris shown.

Grid settings dialogGrid display On/Off

Snap to GridOn/Off

Set Grid to Origin

Set Grid 0,0 to newlocation

Grid Options Dialog Box

Sets major line spacing,Minor spaces per major,colors, etc.

A typical decimal inch setting is shown.

Working with architectural layouts, a typi-cal setting might be:Major = 1 footMinor = 12 (1 inch)

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Origin 0,0

Decimal inch grid setting shown.

Grid Snap enabled so start and end points are on grid intersections.

X,Y locations may be set by clicking left mouse button or by keying in points.

Re-Sizing the Grid Area

√ Click the Select Tool

√ Click near the outside of the grid.

√ Drag the grid to a new area.

A new ribbon bar for Grid Size Setting will appear at the top of the screen.

An auto-resize option may be enabled.

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Tutorial - Shaft Support√ Start a new Part. Be sure to use More ... Normeng.par as the startup fi le √ Click Sketch √ Pick the Front (X-Z) reference plane.Refer back to this drawing for dimensions

1. Set up a decimal inch grid as shown in the previous section. 1.000 inch major lines and 10 minor lines.2. Draw the base of the part as shown. Start Line at -2.000, 0.500 to -2.000, 0.000 to 3.000,0.000 to 3.000, 0.500Re-size the grid if needed.

Origin 0,0

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3. Draw two circles with center at

X = 0.000, Y = 3.000

The small circle is 1.000 diameter.( Ø symbol = diameter)

The large circle is .875 radius.( R = radius)Use the Tab Key to move the input to radius in the circle ribbon bar.

4. Draw a line straight down from the side of the large circle.

Make sure the line is tangent to the circle and is indicated vertical.

5. Draw a short line across from-2.000, 0.500

6. Use the Trim Corner tool to close the corner.

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7. Re-set the grid origin to the end of the line at 3.000, 0.000

Click the re-position origin icon on the grid ribbon bar.

Click the end if the line at3.000,0.000.

8. Draw the circle at -0.620, 1.250Key in the center location in the X: and Y: boxes in the grid ribbon bar.Point to the center location. Origin 0,0

9. Draw line tanget to 2 circles as shown.

Use tangent constraint to be sure line is tangent to both circles.

10. Draw line from 0.000, 0.500 tangent to the bot-tom of the right circle.

Save the drawing as ShaftSupport

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The bottom of the large circle and the upper side of the right circle.

The .500 radius at the left side of the drawing. (We could have used Fillet at step 6.)

Place dimensions on the sketch as shown. Use dimension constraints to correct any location errors.

Be sure the center of the two circles is in vertical alignment with the Side (Y-Z) reference plane.

Save the drawing.

(Next, we will make a part and a drawing).

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Solid Edge V202D Drawing13. Click the Return icon

The sketch can be seen on the Front (X-Z) plane.

14. Click Protrusion

15. Select the Front (X-Z) plane

16. Click IncludeJust O.K the dialog box.

17 Click each of the lines and arcs that defi ne the outline of the part.A Include icon will appear on each item.

Do not include the reference planes. Click each segment only one time.

The fi nal outline should be a closed loop.

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Solid Edge V20 2D Drawing18. Click RETURN and set the depth of the part to 1.000

19. Click Cutout

Select the Front (X-Z) plane.

20. Click IncludeJust OK the dialog box.

Include the 1.00 diameter center circle.

20. Click RETURNClick the Through Next optionin the cutout ribbon bar.Use the mouse to point the cutout arrow toward the back of the part.

Part Properties.

Collecting data for Bill of Material lists is an important documentation step. It is best to input the data as the part is being modeled.

__ Pop down Tools ...Material Table

__ Scroll down and select Steel

Save the model.

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Making a drawing.

Be sure the part is saved from the previous steps.

21. Click New on the File Menu.

Click the More Taband selectNormeng.dft

A default drawing sheet will show.

22. At the bottlom of the screen, Right Clickthe Sheet option.

__ Pop downFile .. File properties

__ Type in the information to the two tabs as shown

The material, part name and document number will appear in the Bill of Material when inserted into the drawing.

Save the model.

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23. Click the Background Taband select A-Sheet (8 1/2 x 11 size)

24. Click the Drawing View Wizard. Select the ShaftSupport.par model from the folder where you saved it.

25. SelectFrontfor the key view.

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Solid Edge V202D Drawing26. The Front view is selected by default. Click TOP , RIGHT andISOMETRIC as shown.Click Finish.The drawing will fi t at a scale of 1:2 . Select that option be-fore placing the views.

Click a view to move it on the sheet.__ Place dimensions as shown.

__ Click the Parts List icon__ Click the front view.Place the Parts list on the drawing.

Save and Print the drawing.End of tutorial

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Problem 1.__ Layout the sketch in the Part Environment.

__ Dimension the sketch.

__ Set up an “A” size sheet in the Draft Environment.

__ Place the views of the part as shown in the previous tutorial.

__Fill in the Title Block as shown. Use your name in the DR BY: box.

__Set Part Properties, material, etc. Dimension the drawing.

__ Save and Print the drawing.

Thickness = 1.000Material = 2024Aluminum

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Thickness = .125Material = Brass

Problem 2.

Create the sketch for the part shown below.

Follow the steps as shown in Tutorial 1.

Create a drawing with dimen-sions and parts list.

dimension save and print.

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Problem 3.

Create sketch and model. Make a drawing as shown in Tutorial 1. Dimension, Save and Print.

Part = Template

Thickness = .25Material = Steel

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Problem 4.Do the “Modeling Parts with Sketches” tutorial. Make a drawing as shown in Tutorial 1. Save and Print the model and the drawing. (No dimensions).

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31 Solid Edge V20 2D Drawing